Mixer-drum construction



E. c. LEAcH MIXER D RUM CONSTRUCTION Filed July a, 1926 Patented Aug. 14, E128. I

LlhiiThiE STATES ELCBERT C, LEACH, OF OSH'KOSH, WISCONSIN, ASSIGNOR 'IO LEACE'I COMPANY, OF

OSHKOSI-I, WISCONSIN, A CORPORATION OF WISCONSIN.

MIXER-DRUM CONSTRUCTION.

Applicationfiled July 8, 1926. Serial No, 121,978,

This invention has to do with mixer ing and curved portions l5, l6 and 17, and drums, such as are used extensively in mixis provided with a ring 19 which is welded ing concrete and other generally similar mato the same Where the portions 14 and 15 terialg merge. The ring 19 forms a short continua- The principal object of the invention is to tion of the portionla, and causes any con 55 provide an improved mixer drum in which Crete which may spill out of the aperture 13 the heads are so formed and connected as to to drip clear of the drum instead of spreadproduce a structure-which is light, strong ing and accumulating on the outside face and durable, is extremely inexpensive and of the portlons 15, 16 and 17 of the drum, as

simple to'manutacture, and will operate on Would be the case were the drip ring not concrete and other materials in a very efliused. oient manner. 1 The inwardly sloping portion provides Other objects and advantages will be apa passageway which is of increasing width parent to those skilled in the art upon a toward the mixing chamber, whereby to de- 15 full understanding of the nature of the fleet any concrete contacting therewith into d st ti the mixing chamber, and the oppositely O f f th i ti i presented sloping portion 16 gives a concave shape to h i f th purpose f lifi ati the drum end, whereby to cause concrete but it will, of course, he understood that the COIIllIlg lIltO Con a t herewith to be de- 20 inv nti i titfl f b di t in flected back into the center of the mixing other slightly modified forms coming equally m erithin the co nprehensive scope of the ap- The drum is PI'OVlClGCl, iIltQIlOllY 01 the pended clairm V same, with a number of mixing blades 20, i I th accompanying d i and, exterlorly of the same, with a band Fi 1 i a tl ti d id i f a gear 21, the blades 20 and the gear 21 being (11-11111 constructed in accordancg with SQCllI'OCl t0 OPPOSltQ SlClQS OT tllG cylinder i ti As will be observed, the gear 521 is flanged Fig 2 is an end iew of the dru 'n; and in OI'ClGl t0 provide an extended Fi 3 i an l d di l ti cylindrical support for the cylinder 10. The

through one of the heads of the drum. aperture 13 1n the head being the The drum illustrated in the drawing is a Charge p fi in the is Preferably sheet metal structure formed in three sec- Smaller than the corrwpomhhg 1h tions 10, 11 and 12. The intermediate Sechead and the Portion 14 hhh head ti-on 10 is a plain sheet metal cylinder-,while 12 COhSQCIHQHflY of proportionately greater 35 the two head sections 11 and 12 are dished mdlal {3Xt611tsheet metal disks of S-shaped radial section. I 01mm} 1 E h f th h d 11 d 12 i id d In a mixer drum, a head in the form of a with a central aperture l3 which is the single apertured sheet metal disk which is charging opening i th h d 11 d th Shaped in such a way that the portion of 40 di char in p i i th h d 12 d, the disk immediately surrounding the apercommencing f o th d tth aperture, ture lies in one plane and is located farther extend adiall a h t di t t 111 th from the inside of the drum than the other slopes toward the inside of thev drum at 15, por i ns of the disk, and a drip ring of then slopes away fr m th i id t 16, d greater circumference than the portion of 45 then curves back toward the inside at 17 and the disk about the aperture, which ring is terminates in a cylindrical edge which telewelded to said portion in radial continuity scopes within and is lap-welded to the adj awith the same.

cent edge of the cylinder 10 at 18. In testimony whereof I have hereunto The radial portion 14 is more removed subscribed my name. 1 from the inside of the drum than the slop- ELBERT C. LEAOH. 

